Seanet SCU v5
0581-SOM-00002, Issue: 05
12
© Tritech International Ltd.
3. Installation
The Seanet SCU (v5) should be carefully removed from its transit case and checked to see
that the control unit is undamaged. The unit may be inverted to check for any parts that may
have been loosened during transit. If so, remove the unit cover and investigate further. The
unit should be firmly mounted in a clean dry installation such as a rack system.
If fitted in a confined space such as a rack, then an adequate supply of cool air should be
available to keep the unit from overheating. The front and back of the unit must have a clear
space for air venting, cooling and cable access. If the unit is mounted on a desk or bench,
then it should be secured against movement when powered on. Again leave space for air
circulation and cable access.
The SCU is supplied with the screen display and output and communications already
configured. The user should not have to change the screen display layout or comm’s set-up
unless it is not suited to their use (contact
Tritech International Ltd
for more details).
3.1. Connections
Caution
The power should be turned off before making a connection between the sonar
head and surface controller (SCU or SeaHub).
The SCU mains inlet should be connected to a fused (rated 5A) 100-240V 50/60Hz power
supply. The mains supply to the SCU must be clean, free of transient noise spikes and
interference, as suitable for computers and electrical instruments. If the mains supply is of a
dirty nature then a suitable filter or uninterruptible power supply (UPS) must be fitted. There is
an On/Off isolator switch at the rear of the unit and momentary soft power switch at the front.
The isolator switch must be ON before operating the front momentary soft power switch.
For the full connection details of the SCUv5 please refer to Appendix B,
Connect the DVI port to a suitable digital display, or use the DVI to VGA adapter if connecting
a VGA computer screen. If the RAT is used remotely, use the extension lead supplied to
connect it to either the front of the Seanet SCU, or on the rear port marked
RAT
. As an
alternative to using the RAT a keyboard and mouse can be connected to the motherboard
PS/2 ports. Finally connect any sensor equipment to the serial ports, ARCNET or Ethernet
port.
Caution
COM1 does not have any ESD / Transient protection and so should not be used
for connection of serial Sensors and devices. Ports A – D are installed with
protection.
Before powering up the Seanet SCU check that the subsea heads are correctly connected,
check the data communication lines for shorts to other wires, and check the termination
resistance is correct at both ends.